常规储层压裂监测微地震震源定位方法大都假设储层是各向同性的，储层参数在压裂过程中恒定。页岩气储层具有低渗致密等特点，是典型的各向异性介质，现阶段主要采用水平井体积压裂技术开采页岩气，页岩气储层参数在压裂过程中的动态变化较常规储层压裂更为明显。本项目将利用微地震事件的纵横波初至信息和微地震事件之间的"双差"等信息，采用敏感度分析等方法，研究适用于同时求解震源位置与VTI各向异性参数的反演方法。本项目将首先定义新的目标函数；然后选择适当的迭代方法，建立各变量的迭代更新公式；最后采用符合我国页岩气储层实际情况的参数模型生成正演数据，对反演方法进行测试和误差分析，以期指导实际应用。本项目瞄准的问题更加符合页岩气储层压裂特点，能提高页岩气储层压裂监测的微地震震源定位精度，研究成果能用于实际生产，有助于促进我国页岩气储层压裂开采技术进步，并为其它领域的震源定位提供方法和技术支撑。

Most conventional microseismic source localization methods for reservoir fracture monitoring assume that the reservoir parameter is isotropic and constant during the fracturing process. Shale gas reservoir has characteristics of low permeability and high tightness, is a typical anisotropic medium. At current stage, the horizontal well fracturing technology is mainly used in shale gas production, which result in the dynamic change of shale gas reservoir parameter is more apparent than conventional fracturing process. This project will study a joint inversion method which can simultaneously solving the microseismic source location and anisotropic parameter. During the research, a series methods and data will be used including the sensitivity analysis method, the first arrival of P and S waves of microseismic event and the "double difference" between microseismic events. Firstly, this project will define a new objective function. Then select an appropriate iteration method to establish the iterative updating formula for each variable. Last and not the least, this project will use the parameter model to generate synthetic data, which is used for the testing and error analysis of proposed method. The parameter model can reflect the actual geology situation of the shale gas reservoir in China. This project focus on the characteristics of shale gas reservoir fracturing, aim to improve the localization accuracy of microseismic sources. The research results can be used for actual production, which result in the improvement of shale gas reservoir production technology. The research results can also be used in localization of microseismic sources of other areas.